GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

perf tools: Make fetch_kernel_version() publicly available

Browse source 
There are 2 places in llvm-utils.c which find kernel version information
through uname. This patch extracts the uname related code into a
fetch_kernel_version() function and puts it into util.h so it can be
reused.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1446818135-87310-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Wang Nan 2015-11-06 13:55:35 +00:00 • committed by Arnaldo Carvalho de Melo
parent 45825d8ab8
commit 07bc5c699a
3 changed files with 50 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

30
tools/perf/util/util.c
View file

@ -3,6 +3,7 @@
#include "debug.h"
#include <api/fs/fs.h>
#include <sys/mman.h>
#include <sys/utsname.h>
#ifdef HAVE_BACKTRACE_SUPPORT
#include <execinfo.h>
#endif
@ -665,3 +666,32 @@ bool find_process(const char *name)
closedir(dir);
return ret ? false : true;
}
int
fetch_kernel_version(unsigned int *puint, char *str,
size_t str_size)
{
struct utsname utsname;
int version, patchlevel, sublevel, err;
if (uname(&utsname))
return -1;
if (str && str_size) {
strncpy(str, utsname.release, str_size);
str[str_size - 1] = '\0';
}
err = sscanf(utsname.release, "%d.%d.%d",
&version, &patchlevel, &sublevel);
if (err != 3) {
pr_debug("Unablt to get kernel version from uname '%s'\n",
utsname.release);
return -1;
}
if (puint)
*puint = (version << 16) + (patchlevel << 8) + sublevel;
return 0;
}